Day 5 Connective Tissues/Cartilage Flashcards
Functions of Connective Tissue (6)
- Establish Framework for human body
- Transport Fluid and dissolved materials
- Protection for delicate organs
- Supporting, surrounding, interconnecting
- Store energy/Store Calcium
- Protect from invasion from micro-organisms
3 types of fibres found in extracellular connective tissue
Elastin, Reticulin, Collagen
Elastin is good for:
pliability, elasticity, return to shape
Collagen is good for:
Strength
Fibroblast cells secret
Ground substance, connective tissue fibres
3 types of connective tissue
Connective tissue proper, fluid connective tissue, supporting connective tissue
Types of Loose CT
Areolar, Adipose, Reticular
Types of Dense CT
Regular, Irregular
Types of Fluid CT
Blood, Lymph
Types of Supporting CT
cartilage, bone
Types of Cartilage
Hyaline, Elastic, Fibrous
Areolar CT : what type, what cells is it made up, where is it found, function
Loose CT, made of all cells founding CT, found in dermis, hypodermic, digestive, respiratory, between muscles, around blood vessels and joints. Cushions and supports with movement
Adipose CT: what type, what cells is it made up, where is it found, function
Loose, CT, made of adipocytes, collagen, elastin
Found: beneath skin at abdomen, buttocks, treats, kidneys, around other organs,
Function: absorb shock, insulates, store energy
Reticular CT: what type, what cells is it made up, where is it found, function
Loose CT made of reticular fibres
Found: liver, kidney, spleen
Function: supporting framework, light but strong
Dense Irregular CT: contain what, where is it found, function
Collagen and elastin
Found: capsule of joints and visceral organs, dermis of skin, periostea and perichondrium, nerve and muscle sheaths
Function: resist force in many directions, prevent over expansion of organs
Dense Regular CT: contain what, where is it found, function
Collagen and elastin
Found: tendons and ligaments, aponeurosis
Function: firm attachment, transmit force, reduce friction between muscles, hold force in one direction
Elastic Tissue: contain what, where is it found, function
Elastin and collagen
Found: between vertebrae, blood vessels:
Function: allows stretch and recoil
What is a perichondrium? and what are its two layers
outer lining of cartilage (except not on hyaline in synovial joints)
has two layers: outer layer for mechanical support/connection to other structures
inner layers for growth and maintenance
how does cartilage get nourishment?
it is avascular so the perichondrium provides support through diffusion
Hyaline Cartilage: found where and function and what fibre types
Found: between ribs and sternum, synovial joints, supports larynx, trachea,
Functions: strong, flexible supports, reduce friction
Collagen mostly
Elastic Cartilage: found where and function and what fibre type
elastin mostly
Found: auricle of ear, epiglottis, larynx
Function: tolerate distortion, return to shape
Fibrocartilage: found where and function and what fibre type
collagen mostly
Found: intervertebral discs, pads in knee joint, pubic symphysis
Function: shock absorption, prevent bone to bone contact
Appositional cartilage growth - how does it happen?
stem cells in perichondrium divide and chondroblasts are formed, chondroblasts move in matrix where they secrete more matrix, chondroblasts mature into chondrocytes
Interstitial Growth how does it happen?
within the matrix. chondrocytes undergo division within. a lacuna surrounded by matrix, daughter cells secrete more matrix, expanding tissue from within.
